<template>
  <div class="container">
    <div class="app-container">
      <!-- 展示熟悉结构 -->
      <el-tree
        :expand-on-click-node="false"
        :data="depts"
        :props="defaultProps"
        default-expand-all
      >
        <!-- 节点结构 -->
        <template v-slot="{ data }">
          <el-row
            style="width: 100%; height: 40px"
            type="flex"
            justify="space-between"
            align="middle"
          >
            <el-col>{{ data.name }}</el-col>
            <el-col :span="4">
              <span class="tree-manager">
                {{ data.managerName }}
              </span>
              <el-dropdown @command="operateDept($event,data.id)">
                <!-- 显示区域内容 -->
                <span class="el-dropdown-link">
                  操作<i class="el-icon-arrow-down el-icon--right" />
                </span>
                <!-- 下拉菜单选项 -->
                <el-dropdown-menu slot="dropdown">
                  <el-dropdown-item command="add">添加子部门</el-dropdown-item>
                  <el-dropdown-item command="edit">编辑部门</el-dropdown-item>
                  <el-dropdown-item command="del">删除</el-dropdown-item>
                </el-dropdown-menu>
              </el-dropdown>
            </el-col>
          </el-row>
        </template>
      </el-tree>
    </div>
    <!-- 放置弹层组件 -->
    <!-- 表示会接收子组件的事件,update:showDialog值=>属性 -->
    <AddDept ref="addDept" :current-node-id="currentNodeId" :show-dialog.sync="showDialog" @updateDepartment="getDepartment" />
  </div>
</template>
<script>
import { getDepartment, delDepartment } from '@/api/department'
import { transListToTreeData } from '@/utils'
import AddDept from './components/add-dept.vue'
export default {
  name: 'Department',
  components: { AddDept },
  data() {
    return {
      currentNodeId: null, // 存储当前点击的节点id
      showDialog: false, // 控制弹层显示隐藏的属性
      depts: [], // 数据属性
      defaultProps: {
        children: 'children', // 读取子节点的字段名
        label: 'name' // 要显示的字段名
      }
    }
  },
  created() {
    this.getDepartment()
  },
  methods: {
    async getDepartment() {
      const result = await getDepartment()
      this.depts = transListToTreeData(result, 0)
    },
    // 操作部门方法
    operateDept(type, id) {
      if (type === 'add') {
        // 添加子部门
        this.showDialog = true
        this.currentNodeId = id
      } else if (type === 'edit') {
        // 编辑部门
        this.showDialog = true
        this.currentNodeId = id// 记录id用来获取数据
        // 更新props-异步动作
        // 直接调用子组件的方法 同步的方法需要放到nextTick中执行
        // 要在子组件获取数据
        // 父组件调用组件的方法获取数据
        this.$nextTick(() => {
          this.$refs.addDept.getDepartmentDetail()// 等同于子组件的this
        })
      } else {
        // 删除部门
        this.$confirm('你确定要删除该部门吗？').then(async() => {
          await delDepartment(id)
          this.$message.success('删除部门成功')
          this.getDepartment()
        })
      }
    }
  }
}
</script>
<style scoped>
.app-container {
  padding: 30px 140px;
  font-size: 14px;
}
.tree-manager {
  width: 85px;
  display: inline-block;
  margin: 10px;
}
</style>
